Idir Abdelhek

Université de Béjaia

This work presents microstructure and mechanical properties of NiWCrBSi coatings produced onto mild steel substrate by oxyacetylene flame spraying, using two different stoichiometries. Coatings were analysed by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and X-ray diffraction. Microhardness tests were carried out...

The quality of coatings produced by thermal spray techniques depends on several parameters such as temperature, combustion gases, feed rate, spray distance, pressure applied during the process and, of course, the spray gun. All these parameters must be carefully selected in order to obtain the best properties for each application. This study aims a...

In the present work, the effects of oxidising and standard flame spray techniques on microstructure and wear performance of Low Velocity Oxygen Fuel NiWCrBSi coatings produced onto mild steel substrate were studied. Results showed that coating microstructure was dependent on the stoichiometry of the reacting gas mixture. Coatings produced in oxidis...

Wire flame spray is a cost-effective process to apply wear and corrosion resistant coatings. The aim of this study was to investigate the effect of flame stoichiometry on microstructural, mechanical, tribological and electrochemical properties of Ni based alloy coatings. Microstructural, mechanical, tribological and electrochemical properties were...

Thermally sprayed Ni-based coatings have shown their potential for use in wear applications due to their good tribological properties, cost efficiency and positive environmental aspects. In this study, the microstructural details and tribological performances of two flame sprayed Ni-based coatings (Ni-W-Cr-B-Si-Fe-C), obtained by process under redu...

Surface treatments and metallic coatings offer multiple functional specifities to protect all types of metallic materials as well as composites, it is possible to renovate or modify physical characteristics through a multitude of techniques. This activity increases durability, corrosion protection, electrical conductivity or sliding characteristics...

L'objectif de ce travail est d´étudier le comportement mécanique d'un matériau revêtu pour connaitre leur réponse mécanique à une sollicitation donnée. Les revêtements déposés sont l'acier inoxydable X6CrNi18-8 et le molybdène. Ces derniers sont projetés sur un substrat en acier doux hypoeutectoide d'usage général par la technique de projection the...